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| author |   Liran Alon <liran.alon@oracle.com> | 2019-11-20 14:24:52 +0200 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2019-11-20 14:23:27 +0100 |
| commit | 992edeaefed682511bd173dabd2f54b1ce5387df (patch) | |
| tree | ca2aaabd383fee2e52e7f3ff90eed6998f31d4ac /virt/kvm/kvm_main.c | |
| parent | KVM: x86: Unexport kvm_vcpu_reload_apic_access_page() (diff) | |
| download | linux-dev-992edeaefed682511bd173dabd2f54b1ce5387df.tar.xz linux-dev-992edeaefed682511bd173dabd2f54b1ce5387df.zip | |
KVM: nVMX: Assume TLB entries of L1 and L2 are tagged differently if L0 use EPT
Since commit 1313cc2bd8f6 ("kvm: mmu: Add guest_mode to kvm_mmu_page_role"),
guest_mode was added to mmu-role and therefore if L0 use EPT, it will
always run L1 and L2 with different EPTP. i.e. EPTP01!=EPTP02.
Because TLB entries are tagged with EP4TA, KVM can assume
TLB entries populated while running L2 are tagged differently
than TLB entries populated while running L1.
Therefore, update nested_has_guest_tlb_tag() to consider if
L0 use EPT instead of if L1 use EPT.
Reviewed-by: Joao Martins <joao.m.martins@oracle.com>
Reviewed-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
Signed-off-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt/kvm/kvm_main.c')
0 files changed, 0 insertions, 0 deletions